Invention Grant
- Patent Title: Low inductance laser driver packaging using lead-frame and thin dielectric layer mask pad definition
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Application No.: US16666714Application Date: 2019-10-29
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Publication No.: US11611193B2Publication Date: 2023-03-21
- Inventor: Gabriel Charlebois , JinHan Ju , Lawrence Godfrey
- Applicant: Excelitas Canada, Inc.
- Applicant Address: CA Vaudreuil-Dorion
- Assignee: Excelitas Canada, Inc.
- Current Assignee: Excelitas Canada, Inc.
- Current Assignee Address: CA Vaudreuil-Dorion
- Agency: Wolf, Greenfield & Sacks, P.C.
- Main IPC: H01S5/042
- IPC: H01S5/042 ; H05K1/18 ; H05K3/30 ; H01L23/48 ; H01L23/495 ; H03K17/687 ; H05K1/11 ; H05K1/16 ; H05K7/20 ; H01S5/0231 ; H01S5/02234 ; H01S5/02325 ; H01S5/02345 ; H01S5/40

Abstract:
A surface mountable laser driver circuit package is configured to mount on a host printed circuit board (PCB). A surface mount circuit package includes a lead-frame. A plurality of laser driver circuit components is mounted on and in electrical communication with the lead-frame of the surface mount circuit package. A dielectric layer is located between the lead-frame and the host PCB and includes portals through the dielectric layer each arranged to accommodate an electrical connection between the lead-frame and the host PCB. The lead-frame and the dielectric layer are arranged such that a first lead-frame portion and a first dielectric layer portal align with a first end of a host PCB trace configured to provide a current return path for the surface mount laser driver, and a second lead-frame portion and a second dielectric layer portal align with a second end of the host PCB trace.
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